Radiator



Nov. 9 1926. 7 1,606,643.

N. KRAMER ET AL RADIATOR Original Filed March 20, 1919 Patented Nov. 9, 1926.

UNITED STATES PATENT OFFICE.

RADIATOR.

Application filed March 20, 1919, Serial No. 288,902. Renewed April 9, 1926.

This invention relates to radiators and, more particularly, to radiators for use In cooling the engines of automob1les. As 1s well known, radiators for this purpose are 5 normally placed at the front of the car and comprise a structure which has channels for the circulation of the water which cools the engine, and air passages through which air is drawn by the action of a fan or through which it is forced by the motion of the car, in order to cool the circulating water.

The object of our invention is to rovide a structure of this character which is relatively simple and cheap to manufacture; s

light and yet very rigid and strong, and is unusually effective in operation.

Another object is to provide certaln 1mprovements in the form, construction, and arrangement of the several arts whereby 3 the above named and other 0 jects may be effectively attained.

A practical embodiment of our invention is shown in the accompanying drawlng 1n which,

i Fig. 1 represents a detail perspective view of the complete radiator and a portion of the hood of an automobile.

Fig. 2 represents an enlarged detail front elevation of a portion of the radiator.

Fig. 3 represents a detail face view, on the same scale as Fig. 2, taken in the plane of the line III-III of Fig. 2, looking in the Y direction of the arrows.

Fig. 4 represents a similar view taken in the plane of the line IVIV of Fig. 2, looking in the direction of the arrows.

Fig. 5 represents a vertical section, on the same scale, taken in the plane of the line V-V of Fig. 3, looking in the direction of the arrows.

Fig. 6 represents a similar view taken in the plane of the line VI-VI of Fig. 3, looking in the direction of the arrows.

Fig. 7 represents a horizontal section, on the same scale, taken in the plane of the line VIIVII of Fig. 2, looking in the direction of the arrows.

Fig. 8 represents a view similar to Fig. 2, but showing a modified arrangement of the parts.

Fig. 9 represents a detail face view, on the same scale, of a modified form of locking plate, and

Fig. 10 represents a detail face view, on the same scale, of another modified form of locking plate.

The radiator is composed of suitable sheet metal, such as brass or iron, and comprises several parts which are secured together to form the whole. A number of water channels are provided and, as each of these is of the same construction, only one will be described in detail.

Each channel is composed of a pair of walls consisting of sheet metal, the said walls being denoted by 1 and 2. These walls are substantially identical and are formed by pressing or otherwise distorting the sheet metal into a corrugated condition, the said corrugations being substantially uniform in size and spacing.

At each end of the corrugations the same are additionally offset laterally from the plane of the. sheet proper so as to form, in effect, corrugations upon the corrugations, the said oifset portions being denoted by 3, 4. These portions are offset approximately parallel to and in the same direction as their corrugations, so that the abutting ends of each of the adjacent walls will be offset in the same direction. The crown portions of.

the main corrugations are depressed, intermediate the oflsets 3, 4, so as to form grooves 5, 6, therein, each of said grooves being tapered in different directions to establish a maximum depth at the junction of the tapered walls.

The purpose of the ofl'sets 3, 4 is to space the walls 1, 2 from each other when placed together to form the water channel, as will be hereinafter described; and the purpose of the grooves 5, 6 is to increase the size of the channel and also the surface area of the walls, in order to provide for accommodation of more. Water and to assist in radiation of the heat for cooling the Water.

In assembling or constructing the radiator, the walls 1, 2 with the corrugations mating, and the front and rear edges of the same secured firmly toare placed face to face i one which is leak proofs In this position the offsets 3, 4,'serve, as already indicated, to space the walls 1, 2, a slight distance from I each other (which distance will be equal to the height of the ofisets above the main corrugations) in order to provide a channel for the water.

' In constructing a radiator, a suitable number of these channels will be employed, and they are spaced from each other and secured together by what we choose to call locking plates. In the preferred form, two of these plates are located between each pair of water channels, as indicated in Fig. 2.

The locking plates are denoted by 7 and may be composed of the same material as the walls 1, 2. These plates are also corrugated by a pressing operation or otherwise, and when two of them are to be placed between a pair of Water channels, the said two plates are" juxtaposed with the crowns of their corrugations abutting each other and abutting the crowns of the corrugations on the adjacent walls of the water channels. In order to provide means for assisting in retaining the locking plates 7 in position with respect to each other and with respect to the water channels, we form a pair of lugs on each corrugation of the .locking plates, one of said lugs being above and the other below the central longitudinal line of the crown of the corrugation, as clearly shown in Fig. 3. These lugs, which are indicated by 8, 9, may be conveniently formed by punching or striking out the metal in a manner well understood by operatives in the sheet metal art. When the locking plates and water channels are placed together, as shown in Fig. 2, the lugs 8, 9, will together straddle the crowns of the adjacent corrugations and quite firmly lock the parts against relative movement. The edges of the looking plates and water channels may also be secured by soldering or in any other suitable manner, in order to maintain the parts firmly in assembly.

It will be understood that a suitable number of channels and locking plates may be thus associated in order to form a radiator of the desired capacity, and that the said construction will be bounded by a suitable rim and provided with the ordinary nipples for the ingress and egress of the circulating water, as well as by an opening to serve as a filler hole. It will also be clear that the water channels are suitably connected at their upper and lower ends in order to provide a sinuous and continuous passage for the water; all of which is fully within the practice of those skilled in this art.

When in use the radiator is placed so that the air passages, which are denoted by 10 and are formed by the corrugations in the adjacent parts, will lie parallel with the longitudinal axis of the car, so as to facilitate the flow of air therethrough.

The modified form shown in Fig. 8 is the same as that shown in Fig. 2, except that only one locking plate 7 is arranged between each pairof water channels.

The modified form of locking plate shown in Fig. 9 is the same as that shown in Fig. 3, exceptthat the corrugations take a zig-zag course throughout their length. This serves to space the lugs 8 and 9 further from each other in the direction of the lateral axis of the said corrugations, and also increases the cooling efiect ofthe air by delaying its passage through the radiator. The modified form shown in Fig. 10 has the advantages of the form shown in Fig. 9, andhas the additional advantage of embodying three lugs, thereby. increasing the rigidity of the assembly. In this form the third set of lugs are indicated by 9*.

From the foregoing description, when taken in connection with the drawings, it

will be seen that the construction is very simple since each element may be stamped or rolled out at a single operation, and since there is merely a plurality of similar units of construction which constitute the radiator as a whole. g

It will be understood that various changes may be resorted to in the form, construction and arrangement of the several parts, without departing from the spirit and scope of our invention and hence we do not intend to be limited to the details herein shown and described, except as they may be included in the claims.

What we claim is:

l. A radiator including means for forming a water channel, said means comprising two walls of uniformly curved corrugated material, said corrugations being provided near their ends with inwardly extending oliset portions disposed laterally of the plane of the walls to act as spacing elements, the crowns of the corrugations being bent to form grooves in a direction opposite to the bend of the corrugations, each of said grooves having a taper increasin from each end toward the center to reiniorce the walls and increase the size of the water channel and area of the walls.

2. A radiator including means for forming a water channel, said means comprising two walls of uniformly curved corrugated material placed face to face with the corrugations meeting, said corrugations being provided with inwardly extended offset portions disposed laterally of the plane of the walls to act as spacing elements, whereby, when the walls are in position, the offsets on one wall alternate with those on the other Wall in a direction at right angles to the longitudinal axis of the corrugations, the crowns of the corrugations being bent to form grooves in'a direction opposite to the bend of the corrugations, each of said grooves having a taper increasing from each end toward the center to reinforce the walls and increase the size of the water channel and area of the Walls.

3.-A radiator including means for forming a water channel, said means comprising two walls, said walls being provided near their ends with inwardly extending ofi'set' portions disposed laterally of the plane of the walls to act as spacing elements, the crowns of the corrugations being bent to form grooves in a direction opposite to the bend of the corrugations, said grooves being tapered in different directions to increase the size of the water channel and the area of the walls, and a locking plate havinglugs thereon adapted to engage opposite sides of the corrugations on the walls diametrically opposite the tapered grooves to hold the parts in assembly, said lugs being formed by distorting the material of which the composed.

4;. A radiator including means for forming a water channel, said means comprising two walls of corrugated material placed face to face with the corrugations mating, said corrugations being provided with inwardly extending ofis'et portions disposed laterally of I the plane of the walls to act as spacing elements, whereby, when the walls are in position, the offsets on the one wall alternate with those on the other "wall in a direction at right angles to the longitudinal axis of the corrugations, the crowns of the corrugations being bent to form groovesin a direction opposite to the bend of the corrugations, said grooves being tapered in different directions to increase the size of the water channel and plate is vided with inwardly extending ofiset thearea of the walls, and a locking plate havmg lugs thereon adapted to engage oppo site sides of the corrugations on the walls to hold the parts in assembly, said lugs being formed by distorting the material of which the plate is composed.

5. The combination with a radiator in-,

rugations on the walls to hold the parts in v assembly, said corrugations on the locking plate being of zig-zag formation in a longitudinal direction. a

6. The combination with a radiator including means for forming a water channel, said means comprising two walls of corrugated material, said corrugations beinq' proortions disposed laterally of the plane of the walls to act as spacing elements, of a cor- 'rugated locking plate having lugs thereon adapted to engage opposite sides of the corrugations on the walls to hold the parts in assembly, said corrugations on the locking plate being of zig-zag formation in a longitudinal direction, and the lugs thereon being located at the apices of the angles resulting from said zig-zag formation.

In testimony, that we claim the foregoing as our 'oint invention, we have signed our names -t is seventh day of March, 1919.

NATHAN KRAMER. BENJAMIN KRAMER. 

